{ DRM_PLANE_TYPE_CURSOR, "Cursor" },
};
- static const struct drm_prop_enum_list drm_encoder_enum_list[] = {
- { DRM_MODE_ENCODER_NONE, "None" },
- { DRM_MODE_ENCODER_DAC, "DAC" },
- { DRM_MODE_ENCODER_TMDS, "TMDS" },
- { DRM_MODE_ENCODER_LVDS, "LVDS" },
- { DRM_MODE_ENCODER_TVDAC, "TV" },
- { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
- { DRM_MODE_ENCODER_DSI, "DSI" },
- { DRM_MODE_ENCODER_DPMST, "DP MST" },
- { DRM_MODE_ENCODER_DPI, "DPI" },
- };
-
/*
* Optional properties
*/
- /*
- * Internal function to assign a slot in the object idr and optionally
- * register the object into the idr.
- */
- int drm_mode_object_get_reg(struct drm_device *dev,
- struct drm_mode_object *obj,
- uint32_t obj_type,
- bool register_obj,
- void (*obj_free_cb)(struct kref *kref))
- {
- int ret;
-
- mutex_lock(&dev->mode_config.idr_mutex);
- ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
- if (ret >= 0) {
- /*
- * Set up the object linking under the protection of the idr
- * lock so that other users can't see inconsistent state.
- */
- obj->id = ret;
- obj->type = obj_type;
- if (obj_free_cb) {
- obj->free_cb = obj_free_cb;
- kref_init(&obj->refcount);
- }
- }
- mutex_unlock(&dev->mode_config.idr_mutex);
-
- return ret < 0 ? ret : 0;
- }
-
- /**
- * drm_mode_object_get - allocate a new modeset identifier
- * @dev: DRM device
- * @obj: object pointer, used to generate unique ID
- * @obj_type: object type
- *
- * Create a unique identifier based on @ptr in @dev's identifier space. Used
- * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
- * modeset identifiers are _not_ reference counted. Hence don't use this for
- * reference counted modeset objects like framebuffers.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
- int drm_mode_object_get(struct drm_device *dev,
- struct drm_mode_object *obj, uint32_t obj_type)
- {
- return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
- }
-
- void drm_mode_object_register(struct drm_device *dev,
- struct drm_mode_object *obj)
- {
- mutex_lock(&dev->mode_config.idr_mutex);
- idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
- mutex_unlock(&dev->mode_config.idr_mutex);
- }
-
- /**
- * drm_mode_object_unregister - free a modeset identifer
- * @dev: DRM device
- * @object: object to free
- *
- * Free @id from @dev's unique identifier pool.
- * This function can be called multiple times, and guards against
- * multiple removals.
- * These modeset identifiers are _not_ reference counted. Hence don't use this
- * for reference counted modeset objects like framebuffers.
- */
- void drm_mode_object_unregister(struct drm_device *dev,
- struct drm_mode_object *object)
- {
- mutex_lock(&dev->mode_config.idr_mutex);
- if (object->id) {
- idr_remove(&dev->mode_config.crtc_idr, object->id);
- object->id = 0;
- }
- mutex_unlock(&dev->mode_config.idr_mutex);
- }
-
- struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
- uint32_t id, uint32_t type)
- {
- struct drm_mode_object *obj = NULL;
-
- mutex_lock(&dev->mode_config.idr_mutex);
- obj = idr_find(&dev->mode_config.crtc_idr, id);
- if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
- obj = NULL;
- if (obj && obj->id != id)
- obj = NULL;
-
- if (obj && obj->free_cb) {
- if (!kref_get_unless_zero(&obj->refcount))
- obj = NULL;
- }
- mutex_unlock(&dev->mode_config.idr_mutex);
-
- return obj;
- }
-
- /**
- * drm_mode_object_find - look up a drm object with static lifetime
- * @dev: drm device
- * @id: id of the mode object
- * @type: type of the mode object
- *
- * This function is used to look up a modeset object. It will acquire a
- * reference for reference counted objects. This reference must be dropped again
- * by callind drm_mode_object_unreference().
- */
- struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
- uint32_t id, uint32_t type)
- {
- struct drm_mode_object *obj = NULL;
-
- obj = __drm_mode_object_find(dev, id, type);
- return obj;
- }
- EXPORT_SYMBOL(drm_mode_object_find);
-
- /**
- * drm_mode_object_unreference - decr the object refcnt
- * @obj: mode_object
- *
- * This functions decrements the object's refcount if it is a refcounted modeset
- * object. It is a no-op on any other object. This is used to drop references
- * acquired with drm_mode_object_reference().
- */
- void drm_mode_object_unreference(struct drm_mode_object *obj)
- {
- if (obj->free_cb) {
- DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
- kref_put(&obj->refcount, obj->free_cb);
- }
- }
- EXPORT_SYMBOL(drm_mode_object_unreference);
-
- /**
- * drm_mode_object_reference - incr the object refcnt
- * @obj: mode_object
- *
- * This functions increments the object's refcount if it is a refcounted modeset
- * object. It is a no-op on any other object. References should be dropped again
- * by calling drm_mode_object_unreference().
- */
- void drm_mode_object_reference(struct drm_mode_object *obj)
- {
- if (obj->free_cb) {
- DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
- kref_get(&obj->refcount);
- }
- }
- EXPORT_SYMBOL(drm_mode_object_reference);
-
/**
* drm_crtc_force_disable - Forcibly turn off a CRTC
* @crtc: CRTC to turn off
}
EXPORT_SYMBOL(drm_crtc_cleanup);
- static int drm_encoder_register_all(struct drm_device *dev)
- {
- struct drm_encoder *encoder;
- int ret = 0;
-
- drm_for_each_encoder(encoder, dev) {
- if (encoder->funcs->late_register)
- ret = encoder->funcs->late_register(encoder);
- if (ret)
- return ret;
- }
-
- return 0;
- }
-
- static void drm_encoder_unregister_all(struct drm_device *dev)
- {
- struct drm_encoder *encoder;
-
- drm_for_each_encoder(encoder, dev) {
- if (encoder->funcs->early_unregister)
- encoder->funcs->early_unregister(encoder);
- }
- }
-
- /**
- * drm_encoder_init - Init a preallocated encoder
- * @dev: drm device
- * @encoder: the encoder to init
- * @funcs: callbacks for this encoder
- * @encoder_type: user visible type of the encoder
- * @name: printf style format string for the encoder name, or NULL for default name
- *
- * Initialises a preallocated encoder. Encoder should be
- * subclassed as part of driver encoder objects.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
- int drm_encoder_init(struct drm_device *dev,
- struct drm_encoder *encoder,
- const struct drm_encoder_funcs *funcs,
- int encoder_type, const char *name, ...)
- {
- int ret;
-
- drm_modeset_lock_all(dev);
-
- ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
- if (ret)
- goto out_unlock;
-
- encoder->dev = dev;
- encoder->encoder_type = encoder_type;
- encoder->funcs = funcs;
- if (name) {
- va_list ap;
-
- va_start(ap, name);
- encoder->name = kvasprintf(GFP_KERNEL, name, ap);
- va_end(ap);
- } else {
- encoder->name = kasprintf(GFP_KERNEL, "%s-%d",
- drm_encoder_enum_list[encoder_type].name,
- encoder->base.id);
- }
- if (!encoder->name) {
- ret = -ENOMEM;
- goto out_put;
- }
-
- list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
- encoder->index = dev->mode_config.num_encoder++;
-
- out_put:
- if (ret)
- drm_mode_object_unregister(dev, &encoder->base);
-
- out_unlock:
- drm_modeset_unlock_all(dev);
-
- return ret;
- }
- EXPORT_SYMBOL(drm_encoder_init);
-
- /**
- * drm_encoder_cleanup - cleans up an initialised encoder
- * @encoder: encoder to cleanup
- *
- * Cleans up the encoder but doesn't free the object.
- */
- void drm_encoder_cleanup(struct drm_encoder *encoder)
- {
- struct drm_device *dev = encoder->dev;
-
- /* Note that the encoder_list is considered to be static; should we
- * remove the drm_encoder at runtime we would have to decrement all
- * the indices on the drm_encoder after us in the encoder_list.
- */
-
- drm_modeset_lock_all(dev);
- drm_mode_object_unregister(dev, &encoder->base);
- kfree(encoder->name);
- list_del(&encoder->head);
- dev->mode_config.num_encoder--;
- drm_modeset_unlock_all(dev);
-
- memset(encoder, 0, sizeof(*encoder));
- }
- EXPORT_SYMBOL(drm_encoder_cleanup);
-
static unsigned int drm_num_planes(struct drm_device *dev)
{
unsigned int num = 0;
return 0;
}
- /* helper for getconnector and getproperties ioctls */
- int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
- uint32_t __user *prop_ptr,
- uint64_t __user *prop_values,
- uint32_t *arg_count_props)
- {
- int props_count;
- int i, ret, copied;
-
- props_count = obj->properties->count;
- if (!atomic)
- props_count -= obj->properties->atomic_count;
-
- if ((*arg_count_props >= props_count) && props_count) {
- for (i = 0, copied = 0; copied < props_count; i++) {
- struct drm_property *prop = obj->properties->properties[i];
- uint64_t val;
-
- if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
- continue;
-
- ret = drm_object_property_get_value(obj, prop, &val);
- if (ret)
- return ret;
-
- if (put_user(prop->base.id, prop_ptr + copied))
- return -EFAULT;
-
- if (put_user(val, prop_values + copied))
- return -EFAULT;
-
- copied++;
- }
- }
- *arg_count_props = props_count;
-
- return 0;
- }
-
- static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder)
- {
- struct drm_connector *connector;
- struct drm_device *dev = encoder->dev;
- bool uses_atomic = false;
-
- /* For atomic drivers only state objects are synchronously updated and
- * protected by modeset locks, so check those first. */
- drm_for_each_connector(connector, dev) {
- if (!connector->state)
- continue;
-
- uses_atomic = true;
-
- if (connector->state->best_encoder != encoder)
- continue;
-
- return connector->state->crtc;
- }
-
- /* Don't return stale data (e.g. pending async disable). */
- if (uses_atomic)
- return NULL;
-
- return encoder->crtc;
- }
-
- /**
- * drm_mode_getencoder - get encoder configuration
- * @dev: drm device for the ioctl
- * @data: data pointer for the ioctl
- * @file_priv: drm file for the ioctl call
- *
- * Construct a encoder configuration structure to return to the user.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
- int drm_mode_getencoder(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
- {
- struct drm_mode_get_encoder *enc_resp = data;
- struct drm_encoder *encoder;
- struct drm_crtc *crtc;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- encoder = drm_encoder_find(dev, enc_resp->encoder_id);
- if (!encoder)
- return -ENOENT;
-
- drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
- crtc = drm_encoder_get_crtc(encoder);
- if (crtc)
- enc_resp->crtc_id = crtc->base.id;
- else
- enc_resp->crtc_id = 0;
- drm_modeset_unlock(&dev->mode_config.connection_mutex);
-
- enc_resp->encoder_type = encoder->encoder_type;
- enc_resp->encoder_id = encoder->base.id;
- enc_resp->possible_crtcs = encoder->possible_crtcs;
- enc_resp->possible_clones = encoder->possible_clones;
-
- return 0;
- }
-
/**
* drm_mode_getplane_res - enumerate all plane resources
* @dev: DRM device
return drm_mode_cursor_common(dev, req, file_priv);
}
- /**
- * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
- * @bpp: bits per pixels
- * @depth: bit depth per pixel
- *
- * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
- * Useful in fbdev emulation code, since that deals in those values.
- */
- uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
- {
- uint32_t fmt;
-
- switch (bpp) {
- case 8:
- fmt = DRM_FORMAT_C8;
- break;
- case 16:
- if (depth == 15)
- fmt = DRM_FORMAT_XRGB1555;
- else
- fmt = DRM_FORMAT_RGB565;
- break;
- case 24:
- fmt = DRM_FORMAT_RGB888;
- break;
- case 32:
- if (depth == 24)
- fmt = DRM_FORMAT_XRGB8888;
- else if (depth == 30)
- fmt = DRM_FORMAT_XRGB2101010;
- else
- fmt = DRM_FORMAT_ARGB8888;
- break;
- default:
- DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
- fmt = DRM_FORMAT_XRGB8888;
- break;
- }
-
- return fmt;
- }
- EXPORT_SYMBOL(drm_mode_legacy_fb_format);
-
- static bool drm_property_type_valid(struct drm_property *property)
- {
- if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
- return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
- return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE);
- }
-
- /**
- * drm_property_create - create a new property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @num_values: number of pre-defined values
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Note that the DRM core keeps a per-device list of properties and that, if
- * drm_mode_config_cleanup() is called, it will destroy all properties created
- * by the driver.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
- struct drm_property *drm_property_create(struct drm_device *dev, int flags,
- const char *name, int num_values)
- {
- struct drm_property *property = NULL;
- int ret;
-
- property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
- if (!property)
- return NULL;
-
- property->dev = dev;
-
- if (num_values) {
- property->values = kcalloc(num_values, sizeof(uint64_t),
- GFP_KERNEL);
- if (!property->values)
- goto fail;
- }
-
- ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
- if (ret)
- goto fail;
-
- property->flags = flags;
- property->num_values = num_values;
- INIT_LIST_HEAD(&property->enum_list);
-
- if (name) {
- strncpy(property->name, name, DRM_PROP_NAME_LEN);
- property->name[DRM_PROP_NAME_LEN-1] = '\0';
- }
-
- list_add_tail(&property->head, &dev->mode_config.property_list);
-
- WARN_ON(!drm_property_type_valid(property));
-
- return property;
- fail:
- kfree(property->values);
- kfree(property);
- return NULL;
- }
- EXPORT_SYMBOL(drm_property_create);
-
- /**
- * drm_property_create_enum - create a new enumeration property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @props: enumeration lists with property values
- * @num_values: number of pre-defined values
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is only allowed to set one of the predefined values for enumeration
- * properties.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
- struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
- const char *name,
- const struct drm_prop_enum_list *props,
- int num_values)
+ int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
+ struct drm_property *property,
+ uint64_t value)
{
- struct drm_property *property;
- int i, ret;
-
- flags |= DRM_MODE_PROP_ENUM;
-
- property = drm_property_create(dev, flags, name, num_values);
- if (!property)
- return NULL;
+ int ret = -EINVAL;
+ struct drm_crtc *crtc = obj_to_crtc(obj);
- for (i = 0; i < num_values; i++) {
- ret = drm_property_add_enum(property, i,
- props[i].type,
- props[i].name);
- if (ret) {
- drm_property_destroy(dev, property);
- return NULL;
- }
- }
+ if (crtc->funcs->set_property)
+ ret = crtc->funcs->set_property(crtc, property, value);
+ if (!ret)
+ drm_object_property_set_value(obj, property, value);
- return property;
+ return ret;
}
- EXPORT_SYMBOL(drm_property_create_enum);
/**
- * drm_property_create_bitmask - create a new bitmask property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @props: enumeration lists with property bitflags
- * @num_props: size of the @props array
- * @supported_bits: bitmask of all supported enumeration values
- *
- * This creates a new bitmask drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
+ * drm_mode_plane_set_obj_prop - set the value of a property
+ * @plane: drm plane object to set property value for
+ * @property: property to set
+ * @value: value the property should be set to
*
- * Compared to plain enumeration properties userspace is allowed to set any
- * or'ed together combination of the predefined property bitflag values
+ * This functions sets a given property on a given plane object. This function
+ * calls the driver's ->set_property callback and changes the software state of
+ * the property if the callback succeeds.
*
* Returns:
- * A pointer to the newly created property on success, NULL on failure.
+ * Zero on success, error code on failure.
*/
- struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
- int flags, const char *name,
- const struct drm_prop_enum_list *props,
- int num_props,
- uint64_t supported_bits)
+ int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
+ struct drm_property *property,
+ uint64_t value)
{
- struct drm_property *property;
- int i, ret, index = 0;
- int num_values = hweight64(supported_bits);
-
- flags |= DRM_MODE_PROP_BITMASK;
-
- property = drm_property_create(dev, flags, name, num_values);
- if (!property)
- return NULL;
- for (i = 0; i < num_props; i++) {
- if (!(supported_bits & (1ULL << props[i].type)))
- continue;
-
- if (WARN_ON(index >= num_values)) {
- drm_property_destroy(dev, property);
- return NULL;
- }
+ int ret = -EINVAL;
+ struct drm_mode_object *obj = &plane->base;
- ret = drm_property_add_enum(property, index++,
- props[i].type,
- props[i].name);
- if (ret) {
- drm_property_destroy(dev, property);
- return NULL;
- }
- }
+ if (plane->funcs->set_property)
+ ret = plane->funcs->set_property(plane, property, value);
+ if (!ret)
+ drm_object_property_set_value(obj, property, value);
- return property;
- }
- EXPORT_SYMBOL(drm_property_create_bitmask);
-
- static struct drm_property *property_create_range(struct drm_device *dev,
- int flags, const char *name,
- uint64_t min, uint64_t max)
- {
- struct drm_property *property;
-
- property = drm_property_create(dev, flags, name, 2);
- if (!property)
- return NULL;
-
- property->values[0] = min;
- property->values[1] = max;
-
- return property;
- }
-
- /**
- * drm_property_create_range - create a new unsigned ranged property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @min: minimum value of the property
- * @max: maximum value of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is allowed to set any unsigned integer value in the (min, max)
- * range inclusive.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
- struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
- const char *name,
- uint64_t min, uint64_t max)
- {
- return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
- name, min, max);
- }
- EXPORT_SYMBOL(drm_property_create_range);
-
- /**
- * drm_property_create_signed_range - create a new signed ranged property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @min: minimum value of the property
- * @max: maximum value of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is allowed to set any signed integer value in the (min, max)
- * range inclusive.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
- struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
- int flags, const char *name,
- int64_t min, int64_t max)
- {
- return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
- name, I642U64(min), I642U64(max));
- }
- EXPORT_SYMBOL(drm_property_create_signed_range);
-
- /**
- * drm_property_create_object - create a new object property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- * @type: object type from DRM_MODE_OBJECT_* defines
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * Userspace is only allowed to set this to any property value of the given
- * @type. Only useful for atomic properties, which is enforced.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
- struct drm_property *drm_property_create_object(struct drm_device *dev,
- int flags, const char *name, uint32_t type)
- {
- struct drm_property *property;
-
- flags |= DRM_MODE_PROP_OBJECT;
-
- if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
- return NULL;
-
- property = drm_property_create(dev, flags, name, 1);
- if (!property)
- return NULL;
-
- property->values[0] = type;
-
- return property;
- }
- EXPORT_SYMBOL(drm_property_create_object);
-
- /**
- * drm_property_create_bool - create a new boolean property type
- * @dev: drm device
- * @flags: flags specifying the property type
- * @name: name of the property
- *
- * This creates a new generic drm property which can then be attached to a drm
- * object with drm_object_attach_property. The returned property object must be
- * freed with drm_property_destroy.
- *
- * This is implemented as a ranged property with only {0, 1} as valid values.
- *
- * Returns:
- * A pointer to the newly created property on success, NULL on failure.
- */
- struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
- const char *name)
- {
- return drm_property_create_range(dev, flags, name, 0, 1);
- }
- EXPORT_SYMBOL(drm_property_create_bool);
-
- /**
- * drm_property_add_enum - add a possible value to an enumeration property
- * @property: enumeration property to change
- * @index: index of the new enumeration
- * @value: value of the new enumeration
- * @name: symbolic name of the new enumeration
- *
- * This functions adds enumerations to a property.
- *
- * It's use is deprecated, drivers should use one of the more specific helpers
- * to directly create the property with all enumerations already attached.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
- int drm_property_add_enum(struct drm_property *property, int index,
- uint64_t value, const char *name)
- {
- struct drm_property_enum *prop_enum;
-
- if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
- return -EINVAL;
-
- /*
- * Bitmask enum properties have the additional constraint of values
- * from 0 to 63
- */
- if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
- (value > 63))
- return -EINVAL;
-
- if (!list_empty(&property->enum_list)) {
- list_for_each_entry(prop_enum, &property->enum_list, head) {
- if (prop_enum->value == value) {
- strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
- prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
- return 0;
- }
- }
- }
-
- prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
- if (!prop_enum)
- return -ENOMEM;
-
- strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
- prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
- prop_enum->value = value;
-
- property->values[index] = value;
- list_add_tail(&prop_enum->head, &property->enum_list);
- return 0;
- }
- EXPORT_SYMBOL(drm_property_add_enum);
-
- /**
- * drm_property_destroy - destroy a drm property
- * @dev: drm device
- * @property: property to destry
- *
- * This function frees a property including any attached resources like
- * enumeration values.
- */
- void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
- {
- struct drm_property_enum *prop_enum, *pt;
-
- list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
- list_del(&prop_enum->head);
- kfree(prop_enum);
- }
-
- if (property->num_values)
- kfree(property->values);
- drm_mode_object_unregister(dev, &property->base);
- list_del(&property->head);
- kfree(property);
- }
- EXPORT_SYMBOL(drm_property_destroy);
-
- /**
- * drm_object_attach_property - attach a property to a modeset object
- * @obj: drm modeset object
- * @property: property to attach
- * @init_val: initial value of the property
- *
- * This attaches the given property to the modeset object with the given initial
- * value. Currently this function cannot fail since the properties are stored in
- * a statically sized array.
- */
- void drm_object_attach_property(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t init_val)
- {
- int count = obj->properties->count;
-
- if (count == DRM_OBJECT_MAX_PROPERTY) {
- WARN(1, "Failed to attach object property (type: 0x%x). Please "
- "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
- "you see this message on the same object type.\n",
- obj->type);
- return;
- }
-
- obj->properties->properties[count] = property;
- obj->properties->values[count] = init_val;
- obj->properties->count++;
- if (property->flags & DRM_MODE_PROP_ATOMIC)
- obj->properties->atomic_count++;
- }
- EXPORT_SYMBOL(drm_object_attach_property);
-
- /**
- * drm_object_property_set_value - set the value of a property
- * @obj: drm mode object to set property value for
- * @property: property to set
- * @val: value the property should be set to
- *
- * This functions sets a given property on a given object. This function only
- * changes the software state of the property, it does not call into the
- * driver's ->set_property callback.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
- int drm_object_property_set_value(struct drm_mode_object *obj,
- struct drm_property *property, uint64_t val)
- {
- int i;
-
- for (i = 0; i < obj->properties->count; i++) {
- if (obj->properties->properties[i] == property) {
- obj->properties->values[i] = val;
- return 0;
- }
- }
-
- return -EINVAL;
- }
- EXPORT_SYMBOL(drm_object_property_set_value);
-
- /**
- * drm_object_property_get_value - retrieve the value of a property
- * @obj: drm mode object to get property value from
- * @property: property to retrieve
- * @val: storage for the property value
- *
- * This function retrieves the softare state of the given property for the given
- * property. Since there is no driver callback to retrieve the current property
- * value this might be out of sync with the hardware, depending upon the driver
- * and property.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
- int drm_object_property_get_value(struct drm_mode_object *obj,
- struct drm_property *property, uint64_t *val)
- {
- int i;
-
- /* read-only properties bypass atomic mechanism and still store
- * their value in obj->properties->values[].. mostly to avoid
- * having to deal w/ EDID and similar props in atomic paths:
- */
- if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
- !(property->flags & DRM_MODE_PROP_IMMUTABLE))
- return drm_atomic_get_property(obj, property, val);
-
- for (i = 0; i < obj->properties->count; i++) {
- if (obj->properties->properties[i] == property) {
- *val = obj->properties->values[i];
- return 0;
- }
- }
-
- return -EINVAL;
- }
- EXPORT_SYMBOL(drm_object_property_get_value);
-
- /**
- * drm_mode_getproperty_ioctl - get the property metadata
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the metadata for a given property, like the different
- * possible values for an enum property or the limits for a range property.
- *
- * Blob properties are special
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
- int drm_mode_getproperty_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
- {
- struct drm_mode_get_property *out_resp = data;
- struct drm_property *property;
- int enum_count = 0;
- int value_count = 0;
- int ret = 0, i;
- int copied;
- struct drm_property_enum *prop_enum;
- struct drm_mode_property_enum __user *enum_ptr;
- uint64_t __user *values_ptr;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- drm_modeset_lock_all(dev);
- property = drm_property_find(dev, out_resp->prop_id);
- if (!property) {
- ret = -ENOENT;
- goto done;
- }
-
- if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- list_for_each_entry(prop_enum, &property->enum_list, head)
- enum_count++;
- }
-
- value_count = property->num_values;
-
- strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
- out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
- out_resp->flags = property->flags;
-
- if ((out_resp->count_values >= value_count) && value_count) {
- values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
- for (i = 0; i < value_count; i++) {
- if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
- ret = -EFAULT;
- goto done;
- }
- }
- }
- out_resp->count_values = value_count;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
- drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
- copied = 0;
- enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
- list_for_each_entry(prop_enum, &property->enum_list, head) {
-
- if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
- ret = -EFAULT;
- goto done;
- }
-
- if (copy_to_user(&enum_ptr[copied].name,
- &prop_enum->name, DRM_PROP_NAME_LEN)) {
- ret = -EFAULT;
- goto done;
- }
- copied++;
- }
- }
- out_resp->count_enum_blobs = enum_count;
- }
-
- /*
- * NOTE: The idea seems to have been to use this to read all the blob
- * property values. But nothing ever added them to the corresponding
- * list, userspace always used the special-purpose get_blob ioctl to
- * read the value for a blob property. It also doesn't make a lot of
- * sense to return values here when everything else is just metadata for
- * the property itself.
- */
- if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
- out_resp->count_enum_blobs = 0;
- done:
- drm_modeset_unlock_all(dev);
- return ret;
- }
-
- static void drm_property_free_blob(struct kref *kref)
- {
- struct drm_property_blob *blob =
- container_of(kref, struct drm_property_blob, base.refcount);
-
- mutex_lock(&blob->dev->mode_config.blob_lock);
- list_del(&blob->head_global);
- mutex_unlock(&blob->dev->mode_config.blob_lock);
-
- drm_mode_object_unregister(blob->dev, &blob->base);
-
- kfree(blob);
- }
-
- /**
- * drm_property_create_blob - Create new blob property
- *
- * Creates a new blob property for a specified DRM device, optionally
- * copying data.
- *
- * @dev: DRM device to create property for
- * @length: Length to allocate for blob data
- * @data: If specified, copies data into blob
- *
- * Returns:
- * New blob property with a single reference on success, or an ERR_PTR
- * value on failure.
- */
- struct drm_property_blob *
- drm_property_create_blob(struct drm_device *dev, size_t length,
- const void *data)
- {
- struct drm_property_blob *blob;
- int ret;
-
- if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
- return ERR_PTR(-EINVAL);
-
- blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
- if (!blob)
- return ERR_PTR(-ENOMEM);
-
- /* This must be explicitly initialised, so we can safely call list_del
- * on it in the removal handler, even if it isn't in a file list. */
- INIT_LIST_HEAD(&blob->head_file);
- blob->length = length;
- blob->dev = dev;
-
- if (data)
- memcpy(blob->data, data, length);
-
- ret = drm_mode_object_get_reg(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
- true, drm_property_free_blob);
- if (ret) {
- kfree(blob);
- return ERR_PTR(-EINVAL);
- }
-
- mutex_lock(&dev->mode_config.blob_lock);
- list_add_tail(&blob->head_global,
- &dev->mode_config.property_blob_list);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- return blob;
- }
- EXPORT_SYMBOL(drm_property_create_blob);
-
- /**
- * drm_property_unreference_blob - Unreference a blob property
- *
- * Drop a reference on a blob property. May free the object.
- *
- * @blob: Pointer to blob property
- */
- void drm_property_unreference_blob(struct drm_property_blob *blob)
- {
- if (!blob)
- return;
-
- drm_mode_object_unreference(&blob->base);
- }
- EXPORT_SYMBOL(drm_property_unreference_blob);
-
- /**
- * drm_property_destroy_user_blobs - destroy all blobs created by this client
- * @dev: DRM device
- * @file_priv: destroy all blobs owned by this file handle
- */
- void drm_property_destroy_user_blobs(struct drm_device *dev,
- struct drm_file *file_priv)
- {
- struct drm_property_blob *blob, *bt;
-
- /*
- * When the file gets released that means no one else can access the
- * blob list any more, so no need to grab dev->blob_lock.
- */
- list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
- list_del_init(&blob->head_file);
- drm_property_unreference_blob(blob);
- }
- }
-
- /**
- * drm_property_reference_blob - Take a reference on an existing property
- *
- * Take a new reference on an existing blob property.
- *
- * @blob: Pointer to blob property
- */
- struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
- {
- drm_mode_object_reference(&blob->base);
- return blob;
- }
- EXPORT_SYMBOL(drm_property_reference_blob);
-
- /**
- * drm_property_lookup_blob - look up a blob property and take a reference
- * @dev: drm device
- * @id: id of the blob property
- *
- * If successful, this takes an additional reference to the blob property.
- * callers need to make sure to eventually unreference the returned property
- * again, using @drm_property_unreference_blob.
- */
- struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
- uint32_t id)
- {
- struct drm_mode_object *obj;
- struct drm_property_blob *blob = NULL;
-
- obj = __drm_mode_object_find(dev, id, DRM_MODE_OBJECT_BLOB);
- if (obj)
- blob = obj_to_blob(obj);
- return blob;
- }
- EXPORT_SYMBOL(drm_property_lookup_blob);
-
- /**
- * drm_property_replace_global_blob - atomically replace existing blob property
- * @dev: drm device
- * @replace: location of blob property pointer to be replaced
- * @length: length of data for new blob, or 0 for no data
- * @data: content for new blob, or NULL for no data
- * @obj_holds_id: optional object for property holding blob ID
- * @prop_holds_id: optional property holding blob ID
- * @return 0 on success or error on failure
- *
- * This function will atomically replace a global property in the blob list,
- * optionally updating a property which holds the ID of that property. It is
- * guaranteed to be atomic: no caller will be allowed to see intermediate
- * results, and either the entire operation will succeed and clean up the
- * previous property, or it will fail and the state will be unchanged.
- *
- * If length is 0 or data is NULL, no new blob will be created, and the holding
- * property, if specified, will be set to 0.
- *
- * Access to the replace pointer is assumed to be protected by the caller, e.g.
- * by holding the relevant modesetting object lock for its parent.
- *
- * For example, a drm_connector has a 'PATH' property, which contains the ID
- * of a blob property with the value of the MST path information. Calling this
- * function with replace pointing to the connector's path_blob_ptr, length and
- * data set for the new path information, obj_holds_id set to the connector's
- * base object, and prop_holds_id set to the path property name, will perform
- * a completely atomic update. The access to path_blob_ptr is protected by the
- * caller holding a lock on the connector.
- */
- int drm_property_replace_global_blob(struct drm_device *dev,
- struct drm_property_blob **replace,
- size_t length,
- const void *data,
- struct drm_mode_object *obj_holds_id,
- struct drm_property *prop_holds_id)
- {
- struct drm_property_blob *new_blob = NULL;
- struct drm_property_blob *old_blob = NULL;
- int ret;
-
- WARN_ON(replace == NULL);
-
- old_blob = *replace;
-
- if (length && data) {
- new_blob = drm_property_create_blob(dev, length, data);
- if (IS_ERR(new_blob))
- return PTR_ERR(new_blob);
- }
-
- /* This does not need to be synchronised with blob_lock, as the
- * get_properties ioctl locks all modesetting objects, and
- * obj_holds_id must be locked before calling here, so we cannot
- * have its value out of sync with the list membership modified
- * below under blob_lock. */
- if (obj_holds_id) {
- ret = drm_object_property_set_value(obj_holds_id,
- prop_holds_id,
- new_blob ?
- new_blob->base.id : 0);
- if (ret != 0)
- goto err_created;
- }
-
- drm_property_unreference_blob(old_blob);
- *replace = new_blob;
-
- return 0;
-
- err_created:
- drm_property_unreference_blob(new_blob);
- return ret;
- }
- EXPORT_SYMBOL(drm_property_replace_global_blob);
-
- /**
- * drm_mode_getblob_ioctl - get the contents of a blob property value
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the contents of a blob property. The value stored in
- * an object's blob property is just a normal modeset object id.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
- int drm_mode_getblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
- {
- struct drm_mode_get_blob *out_resp = data;
- struct drm_property_blob *blob;
- int ret = 0;
- void __user *blob_ptr;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_lookup_blob(dev, out_resp->blob_id);
- if (!blob)
- return -ENOENT;
-
- if (out_resp->length == blob->length) {
- blob_ptr = (void __user *)(unsigned long)out_resp->data;
- if (copy_to_user(blob_ptr, blob->data, blob->length)) {
- ret = -EFAULT;
- goto unref;
- }
- }
- out_resp->length = blob->length;
- unref:
- drm_property_unreference_blob(blob);
-
- return ret;
- }
-
- /**
- * drm_mode_createblob_ioctl - create a new blob property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function creates a new blob property with user-defined values. In order
- * to give us sensible validation and checking when creating, rather than at
- * every potential use, we also require a type to be provided upfront.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
- int drm_mode_createblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
- {
- struct drm_mode_create_blob *out_resp = data;
- struct drm_property_blob *blob;
- void __user *blob_ptr;
- int ret = 0;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_create_blob(dev, out_resp->length, NULL);
- if (IS_ERR(blob))
- return PTR_ERR(blob);
-
- blob_ptr = (void __user *)(unsigned long)out_resp->data;
- if (copy_from_user(blob->data, blob_ptr, out_resp->length)) {
- ret = -EFAULT;
- goto out_blob;
- }
-
- /* Dropping the lock between create_blob and our access here is safe
- * as only the same file_priv can remove the blob; at this point, it is
- * not associated with any file_priv. */
- mutex_lock(&dev->mode_config.blob_lock);
- out_resp->blob_id = blob->base.id;
- list_add_tail(&blob->head_file, &file_priv->blobs);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- return 0;
-
- out_blob:
- drm_property_unreference_blob(blob);
- return ret;
- }
-
- /**
- * drm_mode_destroyblob_ioctl - destroy a user blob property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * Destroy an existing user-defined blob property.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
- int drm_mode_destroyblob_ioctl(struct drm_device *dev,
- void *data, struct drm_file *file_priv)
- {
- struct drm_mode_destroy_blob *out_resp = data;
- struct drm_property_blob *blob = NULL, *bt;
- bool found = false;
- int ret = 0;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- blob = drm_property_lookup_blob(dev, out_resp->blob_id);
- if (!blob)
- return -ENOENT;
-
- mutex_lock(&dev->mode_config.blob_lock);
- /* Ensure the property was actually created by this user. */
- list_for_each_entry(bt, &file_priv->blobs, head_file) {
- if (bt == blob) {
- found = true;
- break;
- }
- }
-
- if (!found) {
- ret = -EPERM;
- goto err;
- }
-
- /* We must drop head_file here, because we may not be the last
- * reference on the blob. */
- list_del_init(&blob->head_file);
- mutex_unlock(&dev->mode_config.blob_lock);
-
- /* One reference from lookup, and one from the filp. */
- drm_property_unreference_blob(blob);
- drm_property_unreference_blob(blob);
-
- return 0;
-
- err:
- mutex_unlock(&dev->mode_config.blob_lock);
- drm_property_unreference_blob(blob);
-
- return ret;
- }
-
- /* Some properties could refer to dynamic refcnt'd objects, or things that
- * need special locking to handle lifetime issues (ie. to ensure the prop
- * value doesn't become invalid part way through the property update due to
- * race). The value returned by reference via 'obj' should be passed back
- * to drm_property_change_valid_put() after the property is set (and the
- * object to which the property is attached has a chance to take it's own
- * reference).
- */
- bool drm_property_change_valid_get(struct drm_property *property,
- uint64_t value, struct drm_mode_object **ref)
- {
- int i;
-
- if (property->flags & DRM_MODE_PROP_IMMUTABLE)
- return false;
-
- *ref = NULL;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
- if (value < property->values[0] || value > property->values[1])
- return false;
- return true;
- } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
- int64_t svalue = U642I64(value);
-
- if (svalue < U642I64(property->values[0]) ||
- svalue > U642I64(property->values[1]))
- return false;
- return true;
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
- uint64_t valid_mask = 0;
-
- for (i = 0; i < property->num_values; i++)
- valid_mask |= (1ULL << property->values[i]);
- return !(value & ~valid_mask);
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
- struct drm_property_blob *blob;
-
- if (value == 0)
- return true;
-
- blob = drm_property_lookup_blob(property->dev, value);
- if (blob) {
- *ref = &blob->base;
- return true;
- } else {
- return false;
- }
- } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
- /* a zero value for an object property translates to null: */
- if (value == 0)
- return true;
-
- *ref = __drm_mode_object_find(property->dev, value,
- property->values[0]);
- return *ref != NULL;
- }
-
- for (i = 0; i < property->num_values; i++)
- if (property->values[i] == value)
- return true;
- return false;
- }
-
- void drm_property_change_valid_put(struct drm_property *property,
- struct drm_mode_object *ref)
- {
- if (!ref)
- return;
-
- if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
- drm_mode_object_unreference(ref);
- } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
- drm_property_unreference_blob(obj_to_blob(ref));
- }
-
- static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t value)
- {
- int ret = -EINVAL;
- struct drm_crtc *crtc = obj_to_crtc(obj);
-
- if (crtc->funcs->set_property)
- ret = crtc->funcs->set_property(crtc, property, value);
- if (!ret)
- drm_object_property_set_value(obj, property, value);
-
- return ret;
- }
-
- /**
- * drm_mode_plane_set_obj_prop - set the value of a property
- * @plane: drm plane object to set property value for
- * @property: property to set
- * @value: value the property should be set to
- *
- * This functions sets a given property on a given plane object. This function
- * calls the driver's ->set_property callback and changes the software state of
- * the property if the callback succeeds.
- *
- * Returns:
- * Zero on success, error code on failure.
- */
- int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
- struct drm_property *property,
- uint64_t value)
- {
- int ret = -EINVAL;
- struct drm_mode_object *obj = &plane->base;
-
- if (plane->funcs->set_property)
- ret = plane->funcs->set_property(plane, property, value);
- if (!ret)
- drm_object_property_set_value(obj, property, value);
-
- return ret;
+ return ret;
}
EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
- /**
- * drm_mode_obj_get_properties_ioctl - get the current value of a object's property
- * @dev: DRM device
- * @data: ioctl data
- * @file_priv: DRM file info
- *
- * This function retrieves the current value for an object's property. Compared
- * to the connector specific ioctl this one is extended to also work on crtc and
- * plane objects.
- *
- * Called by the user via ioctl.
- *
- * Returns:
- * Zero on success, negative errno on failure.
- */
- int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
- {
- struct drm_mode_obj_get_properties *arg = data;
- struct drm_mode_object *obj;
- int ret = 0;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- drm_modeset_lock_all(dev);
-
- obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
- if (!obj) {
- ret = -ENOENT;
- goto out;
- }
- if (!obj->properties) {
- ret = -EINVAL;
- goto out_unref;
- }
-
- ret = drm_mode_object_get_properties(obj, file_priv->atomic,
- (uint32_t __user *)(unsigned long)(arg->props_ptr),
- (uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
- &arg->count_props);
-
- out_unref:
- drm_mode_object_unreference(obj);
- out:
- drm_modeset_unlock_all(dev);
- return ret;
- }
-
- int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
- {
- struct drm_mode_obj_set_property *arg = data;
- struct drm_mode_object *arg_obj;
- struct drm_mode_object *prop_obj;
- struct drm_property *property;
- int i, ret = -EINVAL;
- struct drm_mode_object *ref;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return -EINVAL;
-
- drm_modeset_lock_all(dev);
-
- arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
- if (!arg_obj) {
- ret = -ENOENT;
- goto out;
- }
- if (!arg_obj->properties)
- goto out_unref;
-
- for (i = 0; i < arg_obj->properties->count; i++)
- if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
- break;
-
- if (i == arg_obj->properties->count)
- goto out_unref;
-
- prop_obj = drm_mode_object_find(dev, arg->prop_id,
- DRM_MODE_OBJECT_PROPERTY);
- if (!prop_obj) {
- ret = -ENOENT;
- goto out_unref;
- }
- property = obj_to_property(prop_obj);
-
- if (!drm_property_change_valid_get(property, arg->value, &ref))
- goto out_unref;
-
- switch (arg_obj->type) {
- case DRM_MODE_OBJECT_CONNECTOR:
- ret = drm_mode_connector_set_obj_prop(arg_obj, property,
- arg->value);
- break;
- case DRM_MODE_OBJECT_CRTC:
- ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
- break;
- case DRM_MODE_OBJECT_PLANE:
- ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
- property, arg->value);
- break;
- }
-
- drm_property_change_valid_put(property, ref);
-
- out_unref:
- drm_mode_object_unreference(arg_obj);
- out:
- drm_modeset_unlock_all(dev);
- return ret;
- }
-
/**
* drm_mode_crtc_set_gamma_size - set the gamma table size
* @crtc: CRTC to set the gamma table size for
int drm_mode_page_flip_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
- struct drm_mode_crtc_page_flip *page_flip = data;
+ struct drm_mode_crtc_page_flip_target *page_flip = data;
struct drm_crtc *crtc;
struct drm_framebuffer *fb = NULL;
struct drm_pending_vblank_event *e = NULL;
+ u32 target_vblank = page_flip->sequence;
int ret = -EINVAL;
- if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
- page_flip->reserved != 0)
+ if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS)
+ return -EINVAL;
+
+ if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET))
+ return -EINVAL;
+
+ /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
+ * can be specified
+ */
+ if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET)
return -EINVAL;
if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
if (!crtc)
return -ENOENT;
+ if (crtc->funcs->page_flip_target) {
+ u32 current_vblank;
+ int r;
+
+ r = drm_crtc_vblank_get(crtc);
+ if (r)
+ return r;
+
+ current_vblank = drm_crtc_vblank_count(crtc);
+
+ switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) {
+ case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE:
+ if ((int)(target_vblank - current_vblank) > 1) {
+ DRM_DEBUG("Invalid absolute flip target %u, "
+ "must be <= %u\n", target_vblank,
+ current_vblank + 1);
+ drm_crtc_vblank_put(crtc);
+ return -EINVAL;
+ }
+ break;
+ case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE:
+ if (target_vblank != 0 && target_vblank != 1) {
+ DRM_DEBUG("Invalid relative flip target %u, "
+ "must be 0 or 1\n", target_vblank);
+ drm_crtc_vblank_put(crtc);
+ return -EINVAL;
+ }
+ target_vblank += current_vblank;
+ break;
+ default:
+ target_vblank = current_vblank +
+ !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC);
+ break;
+ }
+ } else if (crtc->funcs->page_flip == NULL ||
+ (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) {
+ return -EINVAL;
+ }
+
drm_modeset_lock_crtc(crtc, crtc->primary);
if (crtc->primary->fb == NULL) {
/* The framebuffer is currently unbound, presumably
goto out;
}
- if (crtc->funcs->page_flip == NULL)
- goto out;
-
fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
if (!fb) {
ret = -ENOENT;
}
crtc->primary->old_fb = crtc->primary->fb;
- ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
+ if (crtc->funcs->page_flip_target)
+ ret = crtc->funcs->page_flip_target(crtc, fb, e,
+ page_flip->flags,
+ target_vblank);
+ else
+ ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
if (ret) {
if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
drm_event_cancel_free(dev, &e->base);
}
out:
+ if (ret)
+ drm_crtc_vblank_put(crtc);
if (fb)
drm_framebuffer_unreference(fb);
if (crtc->primary->old_fb)
#include <uapi/drm/drm_fourcc.h>
#include <drm/drm_modeset_lock.h>
#include <drm/drm_rect.h>
- #include <drm/drm_modeset.h>
+ #include <drm/drm_mode_object.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_modes.h>
#include <drm/drm_connector.h>
+ #include <drm/drm_encoder.h>
+ #include <drm/drm_property.h>
struct drm_device;
struct drm_mode_set;
u8 group_data[8];
};
- struct drm_property_blob {
- struct drm_mode_object base;
- struct drm_device *dev;
- struct list_head head_global;
- struct list_head head_file;
- size_t length;
- unsigned char data[];
- };
-
- struct drm_property_enum {
- uint64_t value;
- struct list_head head;
- char name[DRM_PROP_NAME_LEN];
- };
-
- struct drm_property {
- struct list_head head;
- struct drm_mode_object base;
- uint32_t flags;
- char name[DRM_PROP_NAME_LEN];
- uint32_t num_values;
- uint64_t *values;
- struct drm_device *dev;
-
- struct list_head enum_list;
- };
-
struct drm_crtc;
struct drm_encoder;
struct drm_pending_vblank_event;
struct drm_pending_vblank_event *event,
uint32_t flags);
+ /**
+ * @page_flip_target:
+ *
+ * Same as @page_flip but with an additional parameter specifying the
+ * absolute target vertical blank period (as reported by
+ * drm_crtc_vblank_count()) when the flip should take effect.
+ *
+ * Note that the core code calls drm_crtc_vblank_get before this entry
+ * point, and will call drm_crtc_vblank_put if this entry point returns
+ * any non-0 error code. It's the driver's responsibility to call
+ * drm_crtc_vblank_put after this entry point returns 0, typically when
+ * the flip completes.
+ */
+ int (*page_flip_target)(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t flags, uint32_t target);
+
/**
* @set_property:
*
struct drm_modeset_acquire_ctx *acquire_ctx;
};
- /**
- * struct drm_encoder_funcs - encoder controls
- *
- * Encoders sit between CRTCs and connectors.
- */
- struct drm_encoder_funcs {
- /**
- * @reset:
- *
- * Reset encoder hardware and software state to off. This function isn't
- * called by the core directly, only through drm_mode_config_reset().
- * It's not a helper hook only for historical reasons.
- */
- void (*reset)(struct drm_encoder *encoder);
-
- /**
- * @destroy:
- *
- * Clean up encoder resources. This is only called at driver unload time
- * through drm_mode_config_cleanup() since an encoder cannot be
- * hotplugged in DRM.
- */
- void (*destroy)(struct drm_encoder *encoder);
-
- /**
- * @late_register:
- *
- * This optional hook can be used to register additional userspace
- * interfaces attached to the encoder like debugfs interfaces.
- * It is called late in the driver load sequence from drm_dev_register().
- * Everything added from this callback should be unregistered in
- * the early_unregister callback.
- *
- * Returns:
- *
- * 0 on success, or a negative error code on failure.
- */
- int (*late_register)(struct drm_encoder *encoder);
-
- /**
- * @early_unregister:
- *
- * This optional hook should be used to unregister the additional
- * userspace interfaces attached to the encoder from
- * late_unregister(). It is called from drm_dev_unregister(),
- * early in the driver unload sequence to disable userspace access
- * before data structures are torndown.
- */
- void (*early_unregister)(struct drm_encoder *encoder);
- };
-
- /**
- * struct drm_encoder - central DRM encoder structure
- * @dev: parent DRM device
- * @head: list management
- * @base: base KMS object
- * @name: human readable name, can be overwritten by the driver
- * @encoder_type: one of the DRM_MODE_ENCODER_<foo> types in drm_mode.h
- * @possible_crtcs: bitmask of potential CRTC bindings
- * @possible_clones: bitmask of potential sibling encoders for cloning
- * @crtc: currently bound CRTC
- * @bridge: bridge associated to the encoder
- * @funcs: control functions
- * @helper_private: mid-layer private data
- *
- * CRTCs drive pixels to encoders, which convert them into signals
- * appropriate for a given connector or set of connectors.
- */
- struct drm_encoder {
- struct drm_device *dev;
- struct list_head head;
-
- struct drm_mode_object base;
- char *name;
- int encoder_type;
-
- /**
- * @index: Position inside the mode_config.list, can be used as an array
- * index. It is invariant over the lifetime of the encoder.
- */
- unsigned index;
-
- uint32_t possible_crtcs;
- uint32_t possible_clones;
-
- struct drm_crtc *crtc;
- struct drm_bridge *bridge;
- const struct drm_encoder_funcs *funcs;
- const struct drm_encoder_helper_funcs *helper_private;
- };
-
/**
* struct drm_plane_state - mutable plane state
* @plane: backpointer to the plane
/**
* struct drm_bridge_funcs - drm_bridge control functions
- * @attach: Called during drm_bridge_attach
*/
struct drm_bridge_funcs {
+ /**
+ * @attach:
+ *
+ * This callback is invoked whenever our bridge is being attached to a
+ * &drm_encoder.
+ *
+ * The attach callback is optional.
+ *
+ * RETURNS:
+ *
+ * Zero on success, error code on failure.
+ */
int (*attach)(struct drm_bridge *bridge);
+ /**
+ * @detach:
+ *
+ * This callback is invoked whenever our bridge is being detached from a
+ * &drm_encoder.
+ *
+ * The detach callback is optional.
+ */
+ void (*detach)(struct drm_bridge *bridge);
+
/**
* @mode_fixup:
*
* this function passes all other callbacks must succeed for this
* configuration.
*
+ * The mode_fixup callback is optional.
+ *
* NOTE:
*
* This function is called in the check phase of atomic modesets, which
for_each_if ((encoder_mask) & (1 << drm_encoder_index(encoder)))
#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
- #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
#define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
- #define obj_to_property(x) container_of(x, struct drm_property, base)
#define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
#define obj_to_plane(x) container_of(x, struct drm_plane, base)
- struct drm_prop_enum_list {
- int type;
- char *name;
- };
-
extern __printf(6, 7)
int drm_crtc_init_with_planes(struct drm_device *dev,
struct drm_crtc *crtc,
return 1 << drm_crtc_index(crtc);
}
- extern __printf(5, 6)
- int drm_encoder_init(struct drm_device *dev,
- struct drm_encoder *encoder,
- const struct drm_encoder_funcs *funcs,
- int encoder_type, const char *name, ...);
-
- /**
- * drm_encoder_index - find the index of a registered encoder
- * @encoder: encoder to find index for
- *
- * Given a registered encoder, return the index of that encoder within a DRM
- * device's list of encoders.
- */
- static inline unsigned int drm_encoder_index(struct drm_encoder *encoder)
- {
- return encoder->index;
- }
-
- /**
- * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
- * @encoder: encoder to test
- * @crtc: crtc to test
- *
- * Return false if @encoder can't be driven by @crtc, true otherwise.
- */
- static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
- struct drm_crtc *crtc)
- {
- return !!(encoder->possible_crtcs & drm_crtc_mask(crtc));
- }
-
extern __printf(8, 9)
int drm_universal_plane_init(struct drm_device *dev,
struct drm_plane *plane,
extern int drm_crtc_force_disable(struct drm_crtc *crtc);
extern int drm_crtc_force_disable_all(struct drm_device *dev);
- extern void drm_encoder_cleanup(struct drm_encoder *encoder);
-
extern void drm_mode_config_init(struct drm_device *dev);
extern void drm_mode_config_reset(struct drm_device *dev);
extern void drm_mode_config_cleanup(struct drm_device *dev);
- static inline bool drm_property_type_is(struct drm_property *property,
- uint32_t type)
- {
- /* instanceof for props.. handles extended type vs original types: */
- if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE)
- return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type;
- return property->flags & type;
- }
-
- extern int drm_object_property_set_value(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t val);
- extern int drm_object_property_get_value(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t *value);
-
- extern void drm_object_attach_property(struct drm_mode_object *obj,
- struct drm_property *property,
- uint64_t init_val);
- extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
- const char *name, int num_values);
- extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
- const char *name,
- const struct drm_prop_enum_list *props,
- int num_values);
- struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
- int flags, const char *name,
- const struct drm_prop_enum_list *props,
- int num_props,
- uint64_t supported_bits);
- struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
- const char *name,
- uint64_t min, uint64_t max);
- struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
- int flags, const char *name,
- int64_t min, int64_t max);
- struct drm_property *drm_property_create_object(struct drm_device *dev,
- int flags, const char *name, uint32_t type);
- struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags,
- const char *name);
- struct drm_property_blob *drm_property_create_blob(struct drm_device *dev,
- size_t length,
- const void *data);
- struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
- uint32_t id);
- int drm_property_replace_global_blob(struct drm_device *dev,
- struct drm_property_blob **replace,
- size_t length,
- const void *data,
- struct drm_mode_object *obj_holds_id,
- struct drm_property *prop_holds_id);
- struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob);
- void drm_property_unreference_blob(struct drm_property_blob *blob);
- extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
- extern int drm_property_add_enum(struct drm_property *property, int index,
- uint64_t value, const char *name);
extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
int gamma_size);
extern int drm_mode_set_config_internal(struct drm_mode_set *set);
- extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
-
extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
char topology[8]);
extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
return mo ? obj_to_crtc(mo) : NULL;
}
- static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev,
- uint32_t id)
- {
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER);
- return mo ? obj_to_encoder(mo) : NULL;
- }
-
- static inline struct drm_property *drm_property_find(struct drm_device *dev,
- uint32_t id)
- {
- struct drm_mode_object *mo;
- mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY);
- return mo ? obj_to_property(mo) : NULL;
- }
-
/*
* Extract a degamma/gamma LUT value provided by user and round it to the
* precision supported by the hardware.
extern void drm_bridge_remove(struct drm_bridge *bridge);
extern struct drm_bridge *of_drm_find_bridge(struct device_node *np);
extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge);
+ extern void drm_bridge_detach(struct drm_bridge *bridge);
bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
projects / linux-2.6-block.git / commitdiff